NAME

       firehol-mac - ensure source IP and source MAC address match

SYNOPSIS

       mac IP macaddr

DESCRIPTION

       Any  mac  commands  will  affect  all  traffic  destined  for  the firewall host, or to be
       forwarded by the host.  They must be declared before the first router or interface.

              Note

              There is also a mac parameter which allows matching MAC addresses within individual
              rules (see firehol-params(5)).

       The  mac  helper  command  DROPs  traffic  from the IP address that was not sent using the
       macaddr specified.

       When packets are dropped, a log is produced with the label "MAC  MISSMATCH"  (sic.).   mac
       obeys the default log limits (see [LOGGING][] in firehol-params(5)).

              Note

              This  command restricts an IP to a particular MAC address.  The same MAC address is
              permitted send traffic with a different IP.

EXAMPLES

              mac 192.0.2.1    00:01:01:00:00:e6
              mac 198.51.100.1 00:01:01:02:aa:e8

SEE ALSO

       • firehol(1) - FireHOL program

       • firehol.conf(5) - FireHOL configuration

       • firehol-params(5) - optional rule parameters

       • FireHOL Website (http://firehol.org/)

       • FireHOL Online PDF Manual (http://firehol.org/firehol-manual.pdf)

       • FireHOL Online Documentation (http://firehol.org/documentation/)

AUTHORS

       FireHOL Team.